Abradant-supplying apparatus



w. G. HASTINGS.

ABRADANT SUPPLYING APPARATUS. v APPLICATION FILED APR. 12, I920. 1,390, 128. PatantedSept. 6, 192-1.

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ABRADANT SUPPLYING APPARATUS.

APPLICATION FILED APR-. 12, 1920.

Patented Sept. 6, 1921,

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"Jr LXI. 3 H1 13 W. G. HASTINGS.

ABRADANT SUFPLYING APPARATUS.

APPLICATION FILED APR. I2, I920.

1,390,128. v Patentedsept. 6, 1921.,

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Specification of Letters Patent. Pg tmitl d S h g 1921.

Application filed April 12, 1920. Serial No. 373,119.

To all whom it may concern-.-

Be it known that I, lVALrnn a citizen of the United States, residing at Battle Creek, county of Calhoun, State of Michigan, have invented certain new and useful Improvements in Abradant-Supplying Apparatus, of which the following is a specification.

This invention relates toimprovements in abradant supplying apparatus for grinding and polishing machines.

My improved abradant supplying apparatus is especially designed by me for. the grinding and polishing of lenses and I have illustrated the same in. the accompanymg drawing as I have embodied or adaptedthe same for that purpose. My improvements are, however, adaptable for use in grinding and polishing in other relations.

The main objects of this invention are: First, to provide an improved abradant supplying apparatus which is automatic in its operation. 7

Second, to provide an improved abradant supplying apparatus of large capacity. 7

Third, to provide an improved abradant supplying apparatus Which is comparatively simple and economical in structure and very convenient to use.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described inthe following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawin forming a part of this specification, in which:

Figure I is a perspective view of my improved grinding and polishing machine, the table being partially broken away.

Fig. Ii is a detail horizontal section on a line corresponding to line 22 of Fig. HI.

Fig. III is a detail view partially in vertical section on a line correspondingto line of Figs. 1, H and IV.

Fi III is a detail section corresponding to that of Fig. HI, showing the pump actue ating member in its operative position, it being shown in inoperative position in Fig. III.

Fig. IV is a detail view partially in vertical section on a line corresponding to line.

4-4 of Figs. 11, III and V.

Fig. V is a detail horizontal section on a line corresponding to line 5 .5 of Fig. IV, showing details of the abradant feed timing means.

Fig. V1 is a detail vertical section on a line correspondingto line 55 of Fig. V.

1g. VII is a detail view partially in sectlon on a line corresponding to line 7-7 of Fig. Il, showing details of the means for regulating the stroke of the grinding arm.-

Fig. VIII is a detail horizontal section on a line corresponding to line 8-8 of Fig.

pump,

. spindle 2 is arranged vertically through the table 1 and is provided witha head 3 constituting a support for the abradant recep- When the machine is employed for grinding lensesyan abradant such as jewelers rouge is satisfactory.

7 At one side-of the receptacle is a pair of uprights .5 having a bracket 6 adjustably mounted thereon, the bracket being provided with a slide 7engaging the uprights and adj-ustably secured by means of the set screw 7.. On this bracket is a frame 8 provided with an agitator 9 so that as the receptacle is'revolved, the abradant is stirred and kept in suspension. The pump cylinder 10 is mounted on this frame and is provided with an inlet opening 11 having a check valve 12, the inlet being provided with a screen 13.

The discharge 14: of the cylinder is connected to the passage 15 formed in the frame 8. A check valve16 is provided for the discharge of thecylinder. The pump dis charge is provided with a nozzle 17 directed so that; the abradant is delivered to the grinding disk 18 on the upper end of the "work spindlel 9 or to the work as may be desired. The driving means for the work spindle are notillustrated as they form no the arm 26 on the frame 8.

The head 3 is provided with a circular spiral actuating cam 27, the face 28 of which is inwardly beveled as shown. The actuating member 29 is pivoted at 30 on a horizontal pivot carried by the support 31.

' The support is pivoted at 32 on a vertical pivot so that the actuating member'has a horizontal as well as a vertical movement.

The actuating member is connected to the 1 pump lever 23 by the link 33 and is adapted to coact with the cam 27 the actuating lever being beveled. at 34 to correspond with the bevel of the camso that when the actuating member is engaged with the cam, it

is retained against lateral disengagement. When the actuating member drops from the high point 35 .of the cam 27,-the spring actuates the pumpand delivers a :charge of the abradant to the work, p

A timing or controlmeans isprovided in 7 order that the delivery: of the abradant may be varied as the work requires. This in the structure illustratedcomprises a plurality of timing cams 36, 37, 38 and 39 having vary- 6 ing numbers of recesses 40see and VI. I

The control rock shaft 41 is provided with an arm 42' adapted to ride on these cams and when it drops into the recesses, the control Figs. V

,arm 43 is actuated to shift. the actuating ..member to operativeposition as shown in Fig. 111. The control arm has an extension 44 against which the actuating member is normally held by the spring 45 one end of which is connected to the control .arm and the other to the actuating member.

The actuating member is supported by the rest 46 when in its inoperative position.

When the control rock shaft is actuated by its arm or dog 42 dropping into a recess of one of the timing cams, the actuating member is shifted into position to be engaged by the cam 27 and is retained in engagement therewith as described until :released. at. passing over the high point 35 when the spring 45- returns itto its inop erative position.

The arm 42 is splined to the shaft 41-s0 that it may be adjusted to bring the arm into coacting relation with'the desiredcontrolling cam. or timing member. The adj ustment is effected through the rod 47 which projects through the slotted'keeper plate 47 notched to receive the rodsee Figs. I and VI. j

The shaft 48 of the timing camsis provided with the worm gear 49 meshingwith a worm 50 on the driving spindle ,2. 7

The grinding arm 51 is provided with the usual pin 52 and is pivoted at 53 upon the oscillating support 54. This support is provided with an arm 55 slotted at 56 to receive the clamping screw 57 provided with a clamping nut 58 so that the connecting rod 59 may be adjusted to vary the stroke of the grinding arm. The connecting rod engages the eccentric 60 on the driving spindle 2.

A weight 61 provides pressure for the grinding arm.

With the parts thus arranged, I provide a grinding or polishing means for lenses and the like which is very efiicient and produces highclass work. The abradant is delivered in measured charges and in the desired quantities.

.I haveillustrated and described my improvements as I have adapted or embodied the same forgrinding or polishing lenses. My improvements may, however, be adapted for use in other relations. I have not adaptations as I believe the disclosure made will enable those skilled in the art to which my invention relates to modify or adapt the same as may be desired. 7

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: Y

1. In a structure of the class described, the combination of a driving spindle provided with a head, a circular spiral inward? beveled actuatingcam on said spindle hea an abradant receptacle mounted on said head within said cam, a frame member depending into said receptacle, an agitator on said frame member, a pump mounted on said frame member, a pump actuating lever pivoted on said frame membeiyan actuating spring for said pump lever, a pivotally mounted actuating member beveled to coact with said actuating cam, a link connecting said actuating member to said pump lever, a plurality of timing cams, driving connections therefor to said driving spindle, a rock shaft provided with an adjustable arm coacting with saidtiming cams, a control arm on said rock shaft coacting with said actuatfing member to move it to position to coact with said actuating cam, and a spring connecting said actuating member and control arm so that when the actuating member-is released "from the actuating cam, it is returned to its inoperative position.

2. In a structure of the class described, the combination of a driving spindle provided with a head, a circular spiral actuating cam on said spindle head, an abradant receptacle mounted on said head within said cam, a frame member depending into said receptacle, an agitator on said frame member, a pump mounted on said frame member and provided with a discharge directed to deliver to the work, a pump actuating lever pivoted on said frame member, an actuating spring for said pump lever, a pivotally mounted actuating member coacting with said actuating cam, and alink connecting said actuating member to said pump lever.

3. In a structure of the class described, the combination of a driving spindle, an actuating cam on said driving spindle, an abradant receptacle'mounted to rotate therewith, an agitator depending into said receptacle, a pump, a pump actuating lever, an actuating spring for said pump lever, a pivotally mounted actuating member coacting with said actuating cam, said cam and actuating member having parts attached to retain the members in engaging position until a predetermined point in the movement of the cam is reached, a link connecting said actuating member to said pump lever, a plurality of timing cams, a rock shaft provided with an adjustable arm coacting with said timing cams, a control arm on said rockshaft coacting with said actuating member to move it to position to coact with said actuating cam, and a spring connecting said actuating member and control arm so that when the actuating member is released from the actuating cam, it is returned to its inoperative position.

4. In a structure of the class described, the combination of a driving spindle, an actuating cam on said driving spindle, an abradant receptacle, a pump, a pump actuating lever, an actuating member mounted for adjustment to and from operative position to coact with said: actuating cam and operatively connected to said pump lever, and a timing means for controlling said actuating member.

55. In a structure of the class described, the combination of a driving spindle, an actuating cam on said driving spindle, an abradant receptacle, a pump, a pump actuating member mounted for adjustment to and from ope erative position to coact with said actuating cam, a timing means for controlllng sa1d actuating member.

6. In a structure of the class described, the

combination of a driving spindle provided with a head, a circular spiral inwardly beveled cam on said spindle head, an abradant receptacle mounted on said head within said cam, a frame member depending into said receptacle, an agitator on said frame, apump mounted on said frame member and adapt ed to deliver to the work, a pump actuating lever pivoted on said frame member, an actuating spring for said pump lever, a pivotally mounted actuating member beveled to coact with said actuating cam, a link connecting said actuating member to said pump lever, a plurality of timing cams, driving connections therefor to said driving spindle, a rock shaft provided with an adjustable arm coasting with said timing cams, a control arm on saidvrock shaft coacting with said actuating member to move it to posit1on to coact with sa1d actuating cam, and a spring connecting i said actuating member and control'arm so that when the actuating 'lever pivoted on said frame member, an

actuatingspring for saidpump lever, a piv otally mounted actuating member beveled to coact with said actuating cam, a link connecting said actuating member to said pump lever, a control arm coacting with said actuating member to move it to position to coact with said actuating cam, and a spring connecting said actuating member and control arm so that when the actuating member is released from the actuating cam, it is returned to its inoperative position.

8. In a structure of the class described, the combination of a driving spindle provided with a head, a circular spiral inwardly beveled cam on said spindle head, an abradant receptacle mounted within said cam, a pump depending into said receptacle, a pump actuating lever, an actuating spring for said pump lever, a pivotally mounted actuating member beveled to coact with said acztuating cam, a link connecting said actuating member to said pump lever, a control member coasting with said actuating member to move it to position to coact with said cam, a spring connecting said actuating member and control member so that when the actuating member is released from the actuating cam, it is returned to its inoperative position, and an actuating means for said control arm.

9. In a structure of the class described, the combination of a driving spindle provided with a head, a circular spiral cam on said spindle head, an abradant receptacle mounted on said head within said cam, a frame member depending into said receptacle, an agitator on said frame, a pump 1 mounted on said frame member and adapted to deliver to the work, a pump actuating lever pivoted on said frame member, an actuating spring for said pump lever, an actuating member coacting with said actuating cam, and a link connecting said actuating member to said pump lever.

10. In a structure of the class described, the combination of a driving spindle, an actuating cam on said driving spindle, an

abradant receptacle mounted to rotate therewith, an agitator depending into said receptacle, a pump, a pump actuating lever, an actuating spring .for said pump lever, a

pivotally mounted actuating member coact-- ing with said actuating cam, a link -connecting said actuating member to said pump lever, a plurality of timing cams, a rock shaft provided with an adjustable arm coacting with said timing cams, a control arm on said rock shaft coacting with said actu ating member to move it to position to coact with said actuating cam, and a spring connecting said actuating member and control arm so that when the actuating member is released from the actuating cam, it is returned to its inoperative position.

lLIn a structure of the-class described, the combmatlon of a drlving spindle, an

actuating cam on said driving spindle, an

abradant receptacle, a pump adapted to deliver to the work, a pump actuating lever,

an actuating spring for said pump lever, an

actuating member mounted for adjustment to and from operative position to coact with said actuating cam and operatively connected to said pump lever, and a timing means for controlling said actuating member.

12. In a structure of the class described, the combination of an actuating cam, an abradant receptacle, a pump adapted to deliver to the work, a pump actuating member mounted for adjustment to and from operative position to coact with said actuating cam, and a timing means for controlling said actuating member.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses,

WALTER G. HASTINGS.

Witnesses LUELLA G. GREENFIELD, MARGARET L. GLASGOW. 

